Staple-fastening machine.



C. E. GRUSH. STAPLE FASTENING MACHINE." APPLICATION FILED AUG. 11. 1912.

mww n 2 SHEETS SHEET l.

Patented Dec. 11 1910.

C. E. GRUSH.

STAPLE FASTENING MACHINE.

APPLICATION FILED AUG. m 1922.

Patented Dec. 12, 1916.

. 2 SHEETS-SHEFT 2 mwm o CHARLES E. GRUSH, 011 BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON,

JEBSEY.

NEW JERSEY, A CORPORATION OF NEW STAPLE-FASTENING MACHINE.

ieowae.

To all whom may concern forming and inserting staples,

- Massachusetts,

Be it known that I, CHARLEs E. Gnnsn, a citizen of the United States; residing at Beverly,inthe county of Essen-"and State of have invented certain Improvements in Staple-Fastening Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for particularly in the manufacture of boots and shoes, and is herein shown as embodied in a lasting machine of the type disclosed in United States Letters Patent No. 1,163,597, granted Dec. 7, 1915, on an application of Arthur L.

Russell. that the invention is its scope by reason machine adapted for It will be understood, however, in no Way restricted in of its illustration in a special uses.

A general object of the invention is to provide improvedmeans for forming and insertmg staples and particularly to provide staple forming and inserting means which will keep the staple under control throughout the forming and inserting operations, which is simple and compact in construction, efiicient and accurate in operation and easily adjusted, and which is especially adapted to form and insert a staple of fine wire.

Important features of the invention are the'novel means for forming the staple before the machine stops at the end of a single 7 cycle of operations to permit the staple to be driven as scenes the machine starts to perform a new cycle of operations; the clamping of the staple between the inside former and the driver during a part of the driving movement and the travel of the inside former with the driver; novel wire feeding .and wire cutting means; and a novel and simple correlation of the adjustments (f the wire feeding and wire cutting means Wherethe two legs of the staple are kept equal as the length of the staple is varied.

Other features and objects of the invention will appear'from the following descrip- Specifieation of Letters Patent.

- Application filed August 17, 1912. Serial No. 715,633.

tion and claims when read in connection with the accompanying drawings, in which,-

Figure l is a perspective view of a machine embodying the present invention. Fig. 2 is a detail view, partly the staple forming and driving means. 3 is a front elevation showing the wire cutting and wire feeding mechanism. Fig. 4: is a perspective detail of the wire feeding mechanism. Figs. 5 and 6 are sections showing the operation of the staple forming mechanism and Fig. 7 shows the staple.

Referring to the drawings, the frame 2 of the machine supports a driving shaft a 'which is belted to the shaft 5 for driving the lasting mechanism. The shaft 5 has two pulleys 6. from which extend belts 10 over a pair of idlers 1:2 and over a second pair of idlers 14. These traveling belts 10 are the upper stretching instrumentalities to which the shoe is presented to pull the upper upwardly with a force dependent upon the friction induced between the shoe upper and the belt. The fastening mechanism is driven from a shaft 15 by a crossed belt which eX- tends from the main driving shaft l to a loose pulley 16 on the shaft 15. This pulley forms one member of a non-repeating friction clutch, the other member of which is splined on the shaft 15, the clutch being actuated by pressing the shoe against work engaging members 18 located between the belts 10 and connected to the clutch mem} bers by the slide 20 and levers 22, 24, and 26 as described in the application above referred to.

The fastening mechanism herein shown is arranged for making staples of comparati vely fine wire and driving them horizontally through that portion of the upper which stands against the lip of the inner-sole, through said lip and clenching them on the inner side of the lip. The wire is, held on a reel 28 that turns against a suitable friction and is guided through a tube 30 overa lower feed roll into a cutting block 34. An upper feed roll 36 is mounted eccentrically on a shaft 38 which is connected to the shaft '15 by beveled gears 17 and is sustained at its rear ends by a carrier 40 that can turn slightly about the shaft 15. At its front end in section of Fig.

the shaft 38 turns in a bearing block 42 (Figs. 3 and 4) that is movable vertically in a guide 44 against the resistance of a spring plunger 46.

The bearing block 42 has an inclined or wedge lower face which rests on a stop 48 that projects toward the right from the cutting block 34. This blockand the stop are adjustable together by a screw rod 50. This arrangement provides for a contact of the upper feed roll 36 with the wire on the lower idle roll 32 through a portion of its revolution which is determined by the adjustment of the stop 48. When the upper roll by reason of its eccentric mounting engages the wire on the lower roll it begins to feed it; the bearing block 42 rising meanwhile in its guide 44 against the action of the springpressed plunger 46 and then descending again, as the high point in the eccentricity of the upper roll is passed, until it meets the stop 48 whereupon the eccentric roll will leave contact with the wire and cease to feed it during the remainder of its revolution.

By adjusting the stop the beginning and the ending of the feed may be' varied to obtain a length of'feed of the wire suited to. the length of the staple desired. It will now be obvious that the cutting block is simultaneously adjusted with the lengthening and shortening of the wire feed and the extent of the cutter adjustment is appropriately proportioned by the degree of inclination of the lower face of the block 42' to the feed adjustment to cut any staple length with its rear arm, Fig. 5, equal to its front arm. In other words, the cutting block is moved toward the" right by any unit of adjusting screw movement a distance which is equal to the length that the staple is increased by the saidscrew movement or to one half the increase in the length of the wire fed at each feeding operation. The cutting block is dovetailed into the lower face of the 'guide bracket 44 for its adjustment.

The cutting block guides a plunger 52, the end of which constitutes the cotiperating cutting member; the guide or plunger opening intersecting the path of the wire as shown in Fig. 3 whereby both ends of the wire are cut on a bevel or more strictly on an arc. This bevel, so-called for designation, is formed in such relation to the staple length and to the staple forming devices that the two legs of the. finished staple will have parallel bevels disposed on the same relative side of the staple. The cutting plunger 52 is actuated by a rod 53 which is'moved in onedirection. by a cam 54 on the shaft 15, as shown in Fig. 1, and has a head block 55 to engage the plunger justed positions of the block 34, there being a spring 51 in the plunger 52 to retract it. A spring pin 56 on the cutting block 34 ap plies to the end of the wire strand a friction 52 in different adwhich prevents movement of the wire while forming member 58 and across the path which is an anvil pro lower face of a or outside former jection 60 from the plunger 61 which is guided in the outer forming member 58 and is actu ated by with a driver bar 64 a lost motion connection 62 Fig. t1

nat is pivotally con nected to an arm 65 projecting from an eccentric strap 66 on an the shaft 15 Fig. 1.

eccentric 68 fast on The member 58 has grooves in its edge walls into which the staple legs are drawn staple is engaged and as'the crown of the pulled backwardly into said member by the projection 60.

The upper surface of the plunger 61 is engaged by an adjust plunger 72 which acts able spring pressed to retard the more ment of the'plunger 61 in the outside former so that when the plun ger has reached the limit of its staple forming movement it is frictionally by the driver 64 driving movement. livered by held in position to be engaged on its -reverse or staple The hammer blow dethe driver as it moves forward into engagement with the frictionally held insid the staple to be accurat inside former. 72 thereafter frictional e former causes the crown or head of ely conformed to the The spring pressed plunger ly retards the move ment of the inside former effected by the driver thus causing the operate with the driver inside former to coin holding the staple between the forward end of the driver and the inside formeras it is being driven. The

front end of said driver erably formed with scoring bar, being preflips 86 to indent,

score or partially out through and weaken the crown of a wide staple as shown at 83 in F g. 7. This scoring of the staple enables the staple crown by the sewing needle i strike the staple durin tion. Continuing its the driver bar 64 car along with it toward the to be broken easily f that needle should g the sewing operaforward movement ries the plunger 6].

and as said plunger advances left in F1g. 2 an inclined face 7L on its front end meets an inclined face on the upper wall of the staple guide in the relatively swings the pressure 0 channel in stationary st pr the outer aple member 58 and tplunger 6l up'wardly against. the

pressed pin 72, the

forming member 53 bein 'of dimensions to permit the movement of unger 61. The staple however is restrained from such in legs are confined 1n the member 58 in which also ovement because its grooves 111 the outer is guided the driver bar 64 resting on the crown or head of the staple. Therefore the projection 60 is withdrawn from within th e staple leaving the of the inside former tate this direction of clenching which mamas staple free to be driven into the work by the continued advance of the driver bar 64. To {insure that the member (31 shall remain at rest during this portion of the cycle its front and has a face 70 to engage frictionally with a projection 73son member 58, assisted by pressure of spring pin 72.

The anvil 7-1, Fig. 1, against which the staple legs are clenched is formed on a lever 75 pivotally mounted at 76 on a bracket 78 or a portion of the frame in which the outer staple forming member is set and the spring pin 77 is mounted as shown in Fig. 2. The upper arm of this anvil lever is connected by a rod 80 with an upward extension 81, ot' the eccentric-strap 60. This arrangement advances the anvil to a staple clenching position to meet the staple as the latter is driven from the same source of movement. A turn buckle 82 provides for relative adjustment of the driver and the anvil for different thicknesses of work. The anvil member H has a clenching face formed ho turn the legs of the staples upwardly inclenching them and it will he remembered the staple points are beveled on their upper sides (see Fig. 7) to t'aclilims the advantage that the points present less lateral extent for chance of engagement by the needle than if they were turned sidewise.

The machine starts with a staple formed in a previous operation and with the parts in so stantially the position shown in Fig. 2. The driver bar (S-L advances, nicks the crown of the staple as at 88, and presses the slide 61 toward the work until the face 70 having come into engagement with the cooperating incline on the member 58 causes the slide to be lifted, the face 71 of 'the slide 61 catching on the projection 73 of member 58 and the anvil 60 to be withdrawn from within the staple and from the path of the driver bar 64 leaving the staple m the path in member 58. The advance of driver being free to move, by

m ti

the driver (it is accompanied by an actuation of the anvil 74 toward the work to meet the staple and turn its legs upwardly as the staple is firmly driven into the work. The anvil and driver then begin to retreat, the reason of the lost motion connection ('32, with relation to the staple forming plunger 61 during the first portion ofits retreat and this lost motion. that the wire to is fed forward through member 58 across the path of the anv'l as in Fig. 5 The length of wire fe @the stop 48 by the screw 50 to position the eccentrically mounted upper feed roll 36 for longer or shorter period of engagement 'Withfthe' Wire, the cutting block 34 also being'adjusted relatively to the stop as. By the t me thew re cutting plunger it is during H is determined by the adjustment 53 has actuated the cutter the lost motion (52 is exhausted and the plunger (51 is actuated to draw the anvil backwardly from position shown in Fig. 5 to that of Fig. (i to complete the cycle by forming the staple for the next fastening operation.

Having fully described my intention what I claim as new and desire to' sccurc by Letters Patent ot' the United States is: y 1. In a stapling machine, staple driving means, a stationary outside formcr, and an inside former constructed and arranged to move in said outside former in the direction opposed to the driving movement of the driving means-to form a staple and movable with said driving means during its driving movement to cooperate with said driving means in completing the formation of the staple and in holding the staple as it is driven.

2. In a machine of the class described, a stationary former, a reciprocating inside former, a driver and actuating means therefor, connections between said inside former and said driver to cause said inside former to be moved by said driver in both of its operative movements, and means constructed and arranged to effect a cooperation of said inside former with said driver'during the movement of said inside former and said driver in staple driving direction.-

3. In a staple forming and inserting machine, a stationary outside former, an insideformer movable in said outside former partially to form a staple during movement of the driver in one direction and movable with the driver in an opposed direction, and means for retarding the movement of said inside former during its movement in said opposed direction whereby said inside former cooperates with said driver to complete the" formation of the staple and to control the staple as it is driven.

4:- In a machine for forming and inserting staples, a stationary outside former, a driver, a reciprocating inside former, operative connections between said inside former and said driver to cause the inside former to form a staple during movement of said driver in a direction opposed to the driving movement and to move with said driver during its driving movement, and means to retard themovement of said inside former in staple driving direction to effect a cooperation of said inside former with said driver during their movement in staple driving direction.

5. In a machine of the class described, a stationary outside former, a reciprocating inside former, a driver and actuating means therefor, operative connections between said inside former and said driver to cause said inside former to be moved by the driver in a direction opposed to the driving movement of said driver to form a staple and movable with the drlver during its driving movetea are

ment, and means constructed and arranfl'ed to retard the movement of said inside former during' its movement in staple driving direction.

6. In a machine of the class described, staple forming and inserting mechanism comprising, in combination, an outside former, an inside former, and a Wire cutting tool, said inside former and said Wire cutting tool being constructed and arranged to form onthe severed ends of the staple nonaxial points having parallel bevels disposed 011 the same relative side of the staple by relative operative movement in the same plane.

7. In a machine of the class described, staple forming and inserting mechanism comprising, in combination, a stationary outside former, a reciprocable inside former, and Wire cutting means, said Wire cutting means operating to notch the staple Wire to remove a section of said wire in such manner as to form bevels upon the severed ends, and said inside former being constructed and arranged for operative movement in the plane of movement ,eof the Wire cutting means to cause the bevels on the severed ends to be disposed in the plane defined by the-legs of the staple.

8. In a staple forming and inserting machine, a stationary outside former, a reciproeating inside former, a driver, connections between said inside former and said driver to cause said inside former to form a staple during movement of said driver in a direction opposed to its driving movement and movable with said drive: in its staple driving movement, and means, Poi-"retarding the movement of said inside "farmer, during its mo 'ement in staple driving direction, said driver being provided with scoring lips adapted to partially cut through the crown of the staple during its movement in staple driving direction.

In testimony whereof I have signed my name to this specification in the presence of two subscribing wltnesses.

CHARLES E. G-RUSH. Witnesses:

NORMAN G. Hossny, ELMER B. GRUSH. 

